For this feature to work, the CSS media query which prefers the color scheme ... and click the background option to "default" or "dim" to revert to the usual dark and light Twitter themes.

Specifically, your Twitter timeline and Notifications page no longer sport whatever background image you may have set up. Instead, the background is now bathed in a plain off-white color ...

In general, it is best to use dark text on light colors for long passages.” 2. “An important aspect of color on the Web for both low vision and colorblind users is sufficient contrast between ...